GetOptions

Author: Instructor (talk, contrib)

Page for NSIS 2.07 and below users

You can use the latest version of headers (recommended) or the following function code (put the function code in your script before calling it)

Function Description

____________________________________________________________________________
 
                            GetOptions
____________________________________________________________________________
 
 
Get options from command line parameters.
 
 
Syntax:
${GetOptions} "[Parameters]" "[Option]" $var
 
"[Parameters]"     ; command line parameters
                   ;
"[Option]"         ; option name
                   ;
$var               ; Result: option string
 
 
Note:
-Error flag if option not found
-First option symbol it is delimiter

Example1:

Section
	${GetOptions} "/S /T" "/T"  $R0
 
	IfErrors 0 +2
	MessageBox MB_OK "Not found" IDOK +2
	MessageBox MB_OK "Found"
SectionEnd

Example2:

Section
	${GetOptions} "-INSTDIR=C:\Program Files\Common Files -SILENT=yes" "-INSTDIR="  $R0
	;$R0=C:\Program Files\Common Files
SectionEnd

Example3:

Section
	${GetOptions} '/SILENT=yes /INSTDIR="C:/Program Files/Common Files" /ADMIN=password' "/INSTDIR="  $R0
	;$R0=C:/Program Files/Common Files
SectionEnd

Example4:

Section
	${GetOptions} `-SILENT=yes -INSTDIR='"C:/Program Files/Common Files"' -ADMIN=password` "-INSTDIR="  $R0
	;$R0="C:/Program Files/Common Files"
SectionEnd

Function Code

Function GetOptions
	!define GetOptions `!insertmacro GetOptionsCall`
 
	!macro GetOptionsCall _PARAMETERS _OPTION _RESULT
		Push `${_PARAMETERS}`
		Push `${_OPTION}`
		Call GetOptions
		Pop ${_RESULT}
	!macroend
 
	Exch $1
	Exch
	Exch $0
	Exch
	Push $2
	Push $3
	Push $4
	Push $5
	Push $6
	Push $7
	ClearErrors
 
	StrCpy $2 $1 '' 1
	StrCpy $1 $1 1
	StrLen $3 $2
	StrCpy $7 0
 
	begin:
	StrCpy $4 -1
	StrCpy $6 ''
 
	quote:
	IntOp $4 $4 + 1
	StrCpy $5 $0 1 $4
	StrCmp $5$7 '0' notfound
	StrCmp $5 '' trimright
	StrCmp $5 '"' 0 +7
	StrCmp $6 '' 0 +3
	StrCpy $6 '"'
	goto quote
	StrCmp $6 '"' 0 +3
	StrCpy $6 ''
	goto quote
	StrCmp $5 `'` 0 +7
	StrCmp $6 `` 0 +3
	StrCpy $6 `'`
	goto quote
	StrCmp $6 `'` 0 +3
	StrCpy $6 ``
	goto quote
	StrCmp $5 '`' 0 +7
	StrCmp $6 '' 0 +3
	StrCpy $6 '`'
	goto quote
	StrCmp $6 '`' 0 +3
	StrCpy $6 ''
	goto quote
	StrCmp $6 '"' quote
	StrCmp $6 `'` quote
	StrCmp $6 '`' quote
	StrCmp $5 $1 0 quote
	StrCmp $7 0 trimleft trimright
 
	trimleft:
	IntOp $4 $4 + 1
	StrCpy $5 $0 $3 $4
	StrCmp $5 '' notfound
	StrCmp $5 $2 0 quote
	IntOp $4 $4 + $3
	StrCpy $0 $0 '' $4
	StrCpy $4 $0 1
	StrCmp $4 ' ' 0 +3
	StrCpy $0 $0 '' 1
	goto -3
	StrCpy $7 1
	goto begin
 
	trimright:
	StrCpy $0 $0 $4
	StrCpy $4 $0 1 -1
	StrCmp $4 ' ' 0 +3
	StrCpy $0 $0 -1
	goto -3
	StrCpy $3 $0 1
	StrCpy $4 $0 1 -1
	StrCmp $3 $4 0 end
	StrCmp $3 '"' +3
	StrCmp $3 `'` +2
	StrCmp $3 '`' 0 end
	StrCpy $0 $0 -1 1
	goto end
 
	notfound:
	SetErrors
	StrCpy $0 ''
 
	end:
	Pop $7
	Pop $6
	Pop $5
	Pop $4
	Pop $3
	Pop $2
	Pop $1
	Exch $0
FunctionEnd